2081886 has 16 divisors (see below), whose sum is σ = 4178304. Its totient is φ = 691544.

The previous prime is 2081873. The next prime is 2081897. The reversal of 2081886 is 6881802.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2431 + ... + 3173.

It is an arithmetic number, because the mean of its divisors is an integer number (261144).

2^2081886 is an apocalyptic number.

2081886 is an abundant number, since it is smaller than the sum of its proper divisors (2096418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2081886 is a wasteful number, since it uses less digits than its factorization.

2081886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1215.

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 2081886 is about 1442.8742148919. The cubic root of 2081886 is about 127.6886557423.

The spelling of 2081886 in words is "two million, eighty-one thousand, eight hundred eighty-six".